Washing machine and control method of same

ABSTRACT

The present invention relates to a washing machine and a control method of the same. The washing machine includes an outer barrel, and an inner barrel, a cloth feed port of the inner barrel being provided with a gimbal. The gimbal is of an annular structure, an inner circumference of the gimbal is provided with a water injection hole configured to supply water into the gimbal to serve as a balance liquid to balance the load eccentricity, and an outer circumference of the gimbal is provided with at least one drainage port that is openable and closeable. The control method of the washing machine includes injecting water into the gimbal through the gimbal water injection hole so as to balance the load eccentricity of the inner barrel during dehydration.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of International Patent Application No. PCT/CN2013/090105, filed Dec. 20, 2013, which itself claims the priority to Chinese Patent Application Nos. 201310150741.3, and 201310150421.8, both filed Apr. 26, 2013 in the State Intellectual Property Office of P.R. China, which are hereby incorporated herein in their entireties by reference.

FIELD OF THE INVENTION

The present invention relates to the field of washing machines, and more particularly, to a washing machine and a control method of the same.

BACKGROUND OF THE INVENTION

The background description provided herein is for the purpose of generally presenting the context of the present invention. The subject matter discussed in the background of the invention section should not be assumed to be prior art merely as a result of its mention in the background of the invention section. Similarly, a problem mentioned in the background of the invention section or associated with the subject matter of the background of the invention section should not be assumed to have been previously recognized in the prior art. The subject matter in the background of the invention section merely represents different approaches, which in and of themselves may also be inventions. Work of the presently named inventors, to the extent it is described in the background of the invention section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present invention.

A conventional washing machine mostly uses a sealed gimbal, and filler therein uses liquid or substances such as steel balls and steel ingots, which are filled in a cavity of the gimbal. When the washing machine performs dehydration at a high speed, according to a vibration point, the filler that can move in the cavity of the gimbal will automatically slide to a position eccentrically symmetric to the load of the washing machine, thereby reducing the overall eccentricity and reducing the vibration noise. The distributed eccentricity during each work of the washing machine differs, especially when loads having a large water absorption capability, such as cotton-padded clothes, are dehydrated, the gimbal having fixed filler cannot completely balance the eccentric mass. Meanwhile, when less loads or clothes having a small water absorption capability are dehydrated, the eccentricity is small, and the quantity of the filler in the gimbal will have a negative effect on the vibration during low-speed rotation or distribution and eccentricity calculation, which greatly affects the eccentric effect.

The conventional washing machine uses the movement of the filler in the gimbal to balance the eccentricity, the internal filler is sealed inside the gimbal, and the internal filler is liquid or substances such as steel balls or steel ingots, so that it is required that the leak-proofness of the gimbal is rather high. The service life of a washing machine is up to dozens of years, and the requirements on the manufacturing process of the gimbal are high; therefore, the cost is high, and the production efficiency is relatively low. Moreover, the weight of the gimbal together with the filler therein is very large, which brings some difficulties in assembling of the washing machine.

Chinese Patent Application No. 200910158225.9 discloses a gimbal device for a roller washing machine, the gimbal device includes at least two annular chambers which are coaxial with a roller and disposed at an edge of the roller, where at least one chamber is a sphericalgimbal provided with a ball, and at least one chamber is a liquid gimbal provided with a flowing liquid; by using the two different counterweights, that is, the ball and the liquid, at least two balance forces having different reaction speeds are generated respectively, thereby improving the balance state of rotation of the roller of the washing machine during dehydration. When the rotation speed is lower than a resonance point of the roller and the outer barrel, the liquid gimbal absorbs the vibration; when the rotation speed is stabilized with the resonance point, the sphericalgimbal exerts the high vibration absorption performance to absorb the vibration of the outer barrel; for the eccentricity exceeding the total amount of the sphericalgimbal, the liquid gimbal is used to absorb the vibration. The gimbal device can inhibit the vibration amplitude of the outer barrel when it is started and it rotates stably, thereby implementing low vibration, low noise and low cost. However, in the above patent application, once the gimbal is assembled to the washing machine, the mass of the internal counterweight is determined, and cannot be adjusted according to the load eccentricity of the washing machine; moreover, in the working process of the washing machine, the counterweight inside the gimbal also needs to be driven to rotate, which wastes the driving energy consumption of the motor.

Therefore, a heretofore unaddressed need exists in the art to address the aforementioned deficiencies and inadequacies.

SUMMARY OF THE INVENTION

One of the objectives of the present invention is to provide a washing machine and a control method of the washing machine, so as to overcome the defects of the prior art. The washing machine includes an outer barrel and an inner barrel, where a cloth feed port of the inner barrel is provided with a gimbal, the inside of the gimbal is hollow and has no fixed filler, thereby reducing the weight of the gimbal; during working of the washing machine, it is not needed to drive the filler inside the gimbal to rotate together, thereby reducing the energy consumption. An appropriate quantity of water may be injected according to the measured load eccentricity to balance the load, so as to solve the problem of a common washing machine that the quantity of the filler inside the gimbal cannot be changed, thereby precisely controlling the balance, reducing the number of distributions, and greatly reducing the time of dehydration.

In one aspect of the present invention, the washing machine includes an outer barrel and an inner barrel, where a cloth feed port of the inner barrel is provided with a gimbal, the gimbal is of an annular structure, an inner circumference of the gimbal is provided with a water injection hole configured to supply water into the gimbal to serve as a balance liquid to balance the load eccentricity, and an outer circumference of the gimbal is provided with at least one drainage port that can be opened and closed.

In one embodiment, the water injection hole is a round of annular water injection holes disposed on the inner circumference of the gimbal, a water injection component is disposed corresponding to the water injection hole, the water injection component is a pipe fixed to the outer barrel or a shell of the washing machine, one end of the pipe is inserted into the water injection hole of the gimbal and is not in contact with a wall of the gimbal, and the other end of the pipe is in communication with a running water and/or washing water pipeline.

In one embodiment, the water injection component is a pipe fixedly connected to the outer barrel, the bottom of the outer barrel is provided with a drainage chamber that can reserve a part of washing water, one end of the pipe is inserted into the water injection hole of the gimbal and is not in contact with a wall of the gimbal, and the other end is in communication with the drainage chamber through a drainage pump that can pump water flows.

In one embodiment, a filter screen is disposed at a junction of the drainage chamber and the water injection component, and the bottom of the drainage chamber is further provided with a water outlet in communication with a drainage pipeline of the washing machine.

In one embodiment, the outer circumference of the gimbal is provided with 2 to 10 drainage ports configured to discharge a balance liquid, and the drainage port is provided with a drainage valve that can control open and close of the drainage port.

In one embodiment, the drainage valve is an automatic opening and closing structure, the drainage valve includes a spring and a baffle, the spring is located in the drainage port, one end of the spring is connected to an outer end of the drainage port, the other end is connected to the baffle, the baffle is located inside the gimbal, the shape of the baffle matches with the shape of the drainage port, and when the spring is in a free state, the drainage port keeps open.

In one embodiment, the drainage valve is an automatic opening and closing structure, the section of the drainage port is V-shaped, and a movable ball valve spool is disposed inside the V-shaped drainage port.

In another aspect of the present invention, a control method of the washing machine is provided, where water is injected into the gimbal through the gimbal water injection hole, so as to balance the load eccentricity of the inner barrel during dehydration.

In one embodiment, after dehydration distribution, washing water is discharged from the washing machine, the washing water entering the gimbal through the gimbal water injection hole balances the load eccentricity during dehydration of the inner barrel, and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port.

In one embodiment, before the dehydration distribution, the washing water is discharged, and during the dehydration distribution, according to the load eccentricity of the inner barrel, running water suitable to the eccentricity is injected into the gimbal through the gimbal water injection hole, so as to balance the eccentricity of the load inside the inner barrel during the dehydration, and after the dehydration ends, the running water inside the gimbal is discharged through the drainage port.

In one embodiment, before the dehydration distribution, the washing water is discharged, and a part of washing water is reserved in the drainage chamber; during the dehydration distribution, according to the load eccentricity of the inner barrel, the drainage pump injects washing water suitable to the load eccentricity into the gimbal through the gimbal water injection hole, so as to balance the eccentricity of the internal load of the inner barrel during the dehydration, and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port.

In one embodiment, during dehydration, the inner barrel rotates at a high speed, the centrifugal force generated by the rotation is greater than the resistance of the spring, so that the baffle compresses the spring, the baffle closely attaches an inner wall of the gimbal to enclose the drainage port, when the dehydration ends, the inner barrel gradually stops rotation, the centrifugal force gradually reduces along with the reduction of the speed, when the centrifugal force is less than the restoring force of the spring, the restoring force of the spring resets the baffle, and the balance liquid inside the gimbal is discharged through the drainage port; or, during dehydration, the centrifugal force generated by high-speed rotation of the inner barrel is greater than the buoyancy force of the ball valve spool, the ball valve spool closely attaches the inner wall of the V-shaped drainage port to enclose the drainage port, when the dehydration ends, the inner barrel gradually stops rotation, and the centrifugal force gradually reduces along with the reduction of the speed, when the centrifugal force is less than the buoyancy force of the ball valve spool, the ball valve spool is in a free active state, and the balance liquid inside the gimbal is discharged through the drainage port.

In yet another aspect of the present invention, a washing machine is provided. The washing machine includes an outer barrel and an inner barrel, where an opening of the inner barrel is provided with a gimbal, the gimbal is of an annular structure, the inside of the gimbal is a hollow chamber, and the washing machine is further provided with a water intake structure configured to inject water into the hollow chamber to balance the load eccentricity and a drainage structure configured to discharge the water in the gimbal.

In one embodiment, the water intake structure extends from the gimbal at the front end opening of the inner barrel to an inner barrel shaft at the rear end of the inner barrel along an outer surface of a sidewall of the inner barrel, and is in communication with a water intake end of the washing machine through the internal of the inner barrel shaft; the drainage structure extends from the gimbal at the front end opening of the inner barrel to an inner barrel shaft at the rear end of the inner barrel along an outer surface of a sidewall of the inner barrel, and is in communication with a drainage end of the washing machine through the internal of the inner barrel shaft.

In one embodiment, the water intake structure includes an intake pump that is located at the rear portion of the washing machine and configured to transmit water flows and an intake waterway that is in communication with the intake pump and the gimbal and configured to inject water into the gimbal, the drainage structure includes a controllable stop valve that is located at the rear portion of the washing machine and configured to control opening and closing of the drainage structure and a drainage waterway that is in communication with the controllable stop valve and the gimbal and configured to discharge the water in the gimbal.

In one embodiment, the outer circumference of the gimbal is provided with a drainage port, one end of the drainage waterway is connected to the drainage port and the other end is connected to the controllable stop valve, an end face of the gimbal close to the inner circumference of the gimbal is provided with a water inlet, one end of the intake waterway is connected to the water inlet and the other end is connected to the intake pump.

In one embodiment, the intake waterway includes an intake pipe that is located at an outer surface of the sidewall of the inner barrel and rotates together with the inner barrel, a first rotation connector that is located in the outer barrel axle sleeve and is fixed, where a first annular sink is disposed at a junction of the inner barrel shaft and the first rotation connector, the first annular sink is in communication with the intake pipe, and the other end of the first rotation connector is in communication with the water intake end of the washing machine through the intake pump.

In one embodiment, the drainage waterway includes a drainage pipe that is located at the outer surface of the sidewall of the inner barrel and rotates together with the inner barrel, and a second rotation connector that is located in the outer barrel axle sleeve and is fixed, where a second annular sink is disposed at a junction of the inner barrel shaft and the second rotation connector, the second annular sink is in communication with the drainage pipe, and the other end of the second rotation connector is in communication with the water drainage end of the washing machine through the controllable stop valve.

In one embodiment, the inner circumference of the gimbal is provided with at least one vent hole.

In a further aspect of the present invention, a control method of the washing machine is provided, where water is injected into the gimbal through the water intake structure, so as to balance the load eccentricity of the inner barrel during dehydration, and the water in the gimbal is discharged through the drainage structure to reduce the mass of the gimbal.

In one embodiment, during dehydration distribution, a control board of the washing machine calculates or measures the load eccentricity inside the inner barrel, and controls the intake pump to pump water corresponding to the load eccentricity into the gimbal, so as to balance the eccentricity of the load inside the inner barrel, and after the dehydration ends, the control board of the washing machine controls the controllable stop valve to be open, and the water inside the gimbal is discharged through a drainage end of the washing machine under the action of the centrifugal force.

In one embodiment, the control board of the washing machine controls the rotation speed of the inner barrel to rise to a high rotation speed, and controls water injection into the washing machine gimbal to balance the load eccentricity, and the high rotation speed is a rotation speed higher than 75 rpm.

According to the present invention, among other things, the following benefits are achieved:

1. The inside of the gimbal is hollow and does not have any fixed filler, which greatly reduces the weight of the gimbal, and it is not needed to consider sealing, so that the manufacturing process of the gimbal is simplified, the manufacturing cost is reduced, and the production efficiency is improved.

2. The drainage valve of the gimbal of the present invention is automatically controlled by the centrifugal force, external control is not required, and the structure is simple.

3. During work of the washing machine of the present invention, it is not required to drive the filler in the gimbal to rotate together, thereby reducing the energy consumption.

4. The washing machine of the present invention injects appropriate quantity of balance liquid according to the measured load eccentricity, or inject water into the gimbal through the intake waterway and the drainage waterway to conveniently balance the load eccentricity, the quantity of the filler inside the gimbal is variable, so as to avoid the unbalanced effect caused by insufficient filler or excessive balance due to excessive filler, thereby solving the problem that the quantity of the filler inside the gimbal of the common washing machine cannot be changed.

5. The washing machine of the present invention precisely control the balance, removes the eccentricity, reduces the vibration and noise of dehydration, reduces the number of distributions, and greatly reduces the dehydration time.

6. In the gimbal of the present invention, the rotation connector and the annular sink convert the intake waterway and the drainage waterway that rotate together with the inner barrel into a water intake end and a drainage end that are fixed and do not rotate, being convenient for water injection and drainage.

These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be affected without departing from the spirit and scope of the novel concepts of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings illustrate one or more embodiments of the invention and, together with the written description, serve to explain the principles of the invention. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment. The drawings do not limit the present invention to the specific embodiments disclosed and described herein. The drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the invention.

FIG. 1 is a structural assembly of a water injection hole-type gimbal and a washing machine according to one embodiment of the present invention.

FIG. 2 is an enlarged diagram of A of FIG. 1.

FIG. 3 is a structural assembly of a water injection hole-type gimbal and a washing machine according to another embodiment of the present invention.

FIG. 4 is an enlarged diagram of B of FIG. 3.

FIG. 5 is a schematic diagram of balance of an internal load of a washing machine and balance water according to one embodiment of the present invention.

FIG. 6 is a flow chart of dehydration of a washing machine according to one embodiment of the present invention.

FIG. 7 is a structural assembly of an active water injection gimbal and a washing machine according to one embodiment of the present invention.

FIG. 8 is an enlarged diagram of A of FIG. 7.

FIG. 9 is an enlarged diagram of B of FIG. 7.

FIG. 10 is an enlarged diagram of C of FIG. 7.

FIG. 11 is a flow chart of dehydration of a washing machine according to one embodiment of the present invention.

In FIGS. 1-11 of the drawings, numeral 1 refers to an inner barrel, numeral 2 refers to a water injection hole, numeral 3 refers to a drainage chamber, numeral 4 refers to a drainage pump, numeral 5 refers to a water injection component, numeral 5 refers to a filter screen, numeral 7 refers to a water outlet, numeral 8 refers to a drainage port, numeral 9 refers to a drainage valve, numeral 10 refers to a spring, numeral 11 refers to a baffle, numeral 12 refers to a second baffle, numeral 13 refers to an outer barrel, numeral 14 refers to a bump, numeral 15 refers to a connection member, numeral 16 refers to a load, numeral 17 refers to a balance water, numeral 18 refers to a ball valve spool, numeral 20 refers to a drainage pipe, numeral 21 refers to a controllable stop valve, numeral 22 refers to an intake pipe, numeral 23 refers to an intake pump, numeral 24 refers to a water inlet, numeral 25 refers to a vent hole, numeral 26 refers to a second rotation connector, numeral 27 refers to a second annular sink, numeral 28 refers to a first rotation connector, numeral 29 refers to a first annular sink, numeral 30 refers to an outer barrel axle sleeve, numeral 31 refers to an inner barrel shaft.

DETAILED DESCRIPTION OF THE INVENTION

The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numerals refer to like elements throughout.

The terms used in this specification generally have their ordinary meanings in the art, within the context of the invention, and in the specific context where each term is used. Certain terms that are used to describe the invention are discussed below, or elsewhere in the specification, to provide additional guidance to the practitioner regarding the description of the invention. For convenience, certain terms may be highlighted, for example using italics and/or quotation marks. The use of highlighting has no influence on the scope and meaning of a term; the scope and meaning of a term is the same, in the same context, whether or not it is highlighted. It will be appreciated that same thing can be said in more than one way. Consequently, alternative language and synonyms may be used for any one or more of the terms discussed herein, nor is any special significance to be placed upon whether or not a term is elaborated or discussed herein. Synonyms for certain terms are provided. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only, and in no way limits the scope and meaning of the invention or of any exemplified term. Likewise, the invention is not limited to various embodiments given in this specification.

It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.

It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising”, or “includes” and/or “including” or “has” and/or “having” when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

Furthermore, relative terms, such as “lower” or “bottom”, “upper” or “top”, and “left” and “right”, may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper”, depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.

The description will be made as to the embodiments of the present disclosure in conjunction with the accompanying drawings in FIGS. 1-11. In accordance with the purposes of this disclosure, as embodied and broadly described herein, this invention, in one aspect, relates to a washing machine and a control method of the same.

As shown in FIG. 1, a washing machine is provided according to one embodiment of the present invention. The washing machine includes an outer barrel 13 and an inner barrel 1, where a cloth feed port of the inner barrel 1 is provided with a gimbal, the gimbal is of an annular structure having a water injection hole, an inner circumference of the gimbalis provided with a water injection hole 2 configured to supply water into the gimbal to serve as a balance liquid to balance the load eccentricity, and an outer circumference of the gimbal is provided with at least one drainage port 8 that can be opened and closed. In washing and rinsing processes of the washing machine, there is no water in the gimbal, and during dehydration distribution, the water enters the internal of the gimbal through the water injection hole 2, so as to balance the load eccentricity (referring to FIG. 5).

The water injection hole 2 is configured as a round of annular water injection hole disposed on the inner circumference of the gimbal, a water injection component is disposed corresponding to the water injection hole, the water injection component 5 is a pipe fixed to the outer barrel 13 or a shell of the washing machine, one end of the pipe is inserted into the water injection hole of the gimbal and is not in contact with a wall of the gimbal to avoid noise generated by relative movement during contact, and the other end of the pipe is in communication with a running water and/or washing water pipeline. The running water and/or washing water may be used to balance the load eccentricity.

The water injection hole 2 is configured as a round of annular water injection hole disposed on the inner circumference of the gimbal, a water injection component is disposed corresponding to the water injection hole, the water injection component 5 is a pipe fixed to the outer barrel 13 and/or a shell of the washing machine, one end of the pipe is inserted into the water injection hole of the gimbal and is not in contact with a wall of the gimbal to avoid noise generated by relative movement during contact, and the other end of the pipe is in communication with the running water. The running water may be used to balance the load eccentricity.

The water injection component 5 is a pipe fixedly connected to the outer barrel 13, the bottom of the outer barrel 13 is provided with a drainage chamber 3 that can reserve a part of washing water, one end of the pipe is inserted into the water injection hole of the gimbal and is not in contact with the wall of the gimbal, and the other end is in communication with the drainage chamber 3 through a drainage pump 4 that can pump water flows. During drainage of the washing water in the washing inner barrel 1, a part of the washing water is reserved in the drainage chamber 3, and during the dehydration distribution, the washing machine pumps corresponding quantity of washing water into the gimbal according to the internal load eccentricity, so as to balance the load eccentricity.

A junction of the drainage chamber 3 and the water injection component assumes an inclined surface, a filter screen 6 is disposed at the junction, and the bottom of the drainage chamber 3 is further provided with a water outlet 7 in communication with a drainage pipeline of the washing machine. The filter screen functions to filter lint, thereby avoiding the lint in the washing water from entering the gimbal pipeline 5 to block the gimbal pipeline 5, and the water outlet 7 at the bottom of the drainage chamber 3 may discharge the residual washing water when the washing water is no longer required inside the gimbal after the dehydration distribution is completed.

The outer circumference of the gimbal is provided with 2 to 10 drainage ports 8 configured to discharge the balance liquid, and the drainage port is provided with a drainage valve 9 that can control opening and closing of the drainage port 8. Preferably, there are 3 drainage ports 8 uniformly distributed to the outer circumference of the gimbal.

The drainage valve is an automatic opening and closing structure, the drainage valve 9 includes a spring 10 and a baffle 11, the spring 10 is located in the drainage port 8, one end of the spring 10 is connected to an outer end of the drainage port 8, the other end is connected to the baffle 11, the baffle 11 is located inside the gimbal, and there is a gap between the baffle 11 and an inner wall of the gimbal.

The shape of the baffle 11 matches with the shape of the drainage port 8, the area of the baffle 11 is greater than the area of the drainage port, the length of the spring 10 in a free state is greater than the thickness of the gimbal, and the length of the spring in an extreme compression state is less than the thickness of the gimbal. When the washing inner barrel 1 does not rotate, the spring 10 is in a naturally stretched state, and there is a gap between the baffle 11 and the inner wall of the gimbal, that is, the drainage valve 9 is in an open state. When the washing inner barrel 1 rotates, because of the centrifugal force, the baffle 11 compresses the spring 10 until the baffle 11 is attached to the inner wall of the gimbal, and the drainage valve 9 is in a closed state.

The drainage valve 9 may also be a solenoid valve, and the solenoid valve is electrically connected to a control board of the washing machine, and controls open and close of the solenoid valve through an electromagnetic signal.

A control method of a washing machine having a water injection hole-type gimbal injects water into the gimbal through the gimbal water injection hole 2, so as to balance the load eccentricity during dehydration of the inner barrel 1.

After dehydration distribution, the washing water is discharged from the washing machine, and the washing water entering the gimbal through the gimbal water injection hole 2 balances the load eccentricity of the inner barrel 1 during the dehydration, and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port 8.

Before the dehydration distribution, the washing water is discharged, and during the dehydration distribution, the washing machine calculates the load eccentricity in the inner barrel 1, and injects running water corresponding to the eccentricity into the gimbal through the gimbal water injection hole 2, so as to balance the eccentricity of the internal load during dehydration of the inner barrel 1, and after the dehydration ends, the running water in the gimbal is discharged through the drainage port 8.

Before the dehydration distribution, the washing water is discharged, and a part of washing water is reserved in the drainage chamber, during the dehydration distribution, the washing machine calculates the load eccentricity in the inner barrel 1, the drainage pump 4 injects washing water corresponding to the load eccentricity into the gimbal through the gimbal water injection hole 2, so as to balance the eccentricity of the internal load during dehydration of the inner barrel 1, and after the dehydration, the washing water in the gimbal is discharged through the drainage port 8.

During the dehydration, the inner barrel 1 rotates at a high speed, the centrifugal force generated by the rotation is greater than the resistance of the spring 10, so that the baffle 11 compresses the spring 10, and the baffle 11 closely attaches the inner wall of the gimbal to enclose the drainage port 8; when the dehydration ends, the inner barrel 1 gradually stops rotation, the centrifugal force gradually reduces along with the reduction of the speed, when the centrifugal force is less than the restoring force of the spring 10, the restoring force of the spring 10 resets the baffle 11, and the balance liquid inside the gimbal is discharged through the drainage port 8.

As shown in FIG. 7, a washing machine is provided according to another embodiment of the present invention. The washing machine includes an outer barrel 13 and an inner barrel 1, an opening of the inner barrel 1 is provided with a gimbal, the gimbal is of an annular structure, it is an active water injection-type gimbal, the inside of the gimbal is a hollow chamber, and the washing machine is further provided with a water intake structure configured to inject water into the hollow chamber to balance the load eccentricity and a drainage structure configured to discharge the water in the gimbal; during the dehydration distribution of the washing machine, a control board injects water into the gimbal through the water intake structure according to the magnitude of the load eccentricity, so as to balance the load eccentricity (referring to FIG. 5); and after the dehydration ends, the drainage structure discharges water in the gimbal, and during washing and rising of the washing machine, it is not required to drive the filler in the gimbal to rotate, thereby reducing the mass of the inner barrel and reducing the drive energy consumption.

The water intake structure extends from the gimbal at the front end opening of the inner barrel 1 to an inner barrel shaft at the rear end of the inner barrel 1 along an outer surface of a sidewall of the inner barrel 1, and is in communication with a water intake end of the washing machine through the internal of the inner barrel shaft; the drainage structure extends from the gimbal at the front end opening of the inner barrel 1 to an inner barrel shaft at the rear end of the inner barrel 1 along an outer surface of a sidewall of the inner barrel 1, and is in communication with a drainage end of the washing machine through the internal of the inner barrel shaft.

The water intake structure includes an intake pump 23 that is located at the rear portion of the washing machine and configured to transmit water flows and an intake waterway that is in communication with the intake pump 23 and the gimbal and configured to inject water into the gimbal, the drainage structure includes a controllable stop valve 21 that is located at the rear portion of the washing machine and configured to control opening and closing of the drainage structure and a drainage waterway that is in communication with the controllable stop valve 21 and the gimbal and configured to discharge the water in the gimbal. The intake pump 23 can provide power to pump the water into the internal of the gimbal, and the controllable stop valve 21 controls the drainage structure to discharge the water in the gimbal when filler is not needed in the gimbal, thereby avoiding the gimbal from rotating along with the filler to waste the energy. The controllable stop valve 21 may be a solenoid valve, and the solenoid valve is electrically connected to the control board of the washing machine.

As shown in FIGS. 9 and 10, the outer circumference of the gimbal is provided with a drainage port 8, one end of the drainage waterway is connected to the drainage port 8 and the other end is connected to the controllable stop valve 21, an end face of the gimbal close to the inner circumference of the gimbal is provided with a water inlet 23, one end of the intake waterway is connected to the water inlet 23 and the other end is connected to the intake pump 23. The drainage port 8 is disposed on the outer circumference of the gimbal (referring to FIG. 10), after the controllable stop valve 21 is opened, the water in the gimbal rotates together with the gimbal and is then discharged under the action of the centrifugal force, the drainage pump is not needed, and the water inlet 23 is disposed at the end face of the gimbal, and preferably, disposed at a front end face of the gimbal (referring to FIG. 9) to facilitate entering of the water flow, or disposed at a position near the inner circumference of the gimbal (referring to FIG. 9), so that more water can enter into the gimbal to balance a large load eccentricity.

The intake waterway includes an intake pipe 22 that is located at an outer surface of the sidewall of the inner barrel 1 and rotates together with the inner barrel 1, a first rotation connector 28 that is located in the outer barrel axle sleeve 30 and is fixed, where a first annular sink 29 is disposed at a junction of the inner barrel shaft 31 and the first rotation connector 28, the first annular sink 29 is in communication with the intake pipe 22, and the other end of the first rotation connector 28 is in communication with the water intake end of the washing machine through the intake pump 23.

The drainage waterway includes a drainage pipe 20 that is located at the outer surface of the sidewall of the inner barrel 1 and rotates together with the inner barrel 1, and a second rotation connector 26 that is located in the outer barrel axle sleeve 30 and is fixed, where a second annular sink 27 is disposed at a junction of the inner barrel shaft 31 and the second rotation connector 26, the second annular sink 27 is in communication with the drainage pipe 20, and the other end of the second rotation connector 26 is in communication with the water drainage end of the washing machine through the controllable stop valve.

Because the water inlet 23 and the drainage port 8 are disposed at fixed positions on the gimbal, when the gimbal rotates, the water inlet 23, the intake pipe 22, the drainage port 8 and the drainage pipe 20 rotate together with the gimbal, and therefore, it is very inconvenient to connect the fixed water intake end and the water drainage end of the washing machine. In the present invention, the rotation connectors and the annular sinks are used to skillfully convert the rotating ends into fixed ends.

As shown in FIG. 8, the first rotation connector 28 in the intake pipeline is a pipe connector that is disposed on the outer barrel axle sleeve 30 and has one end exposed out of the outer barrel axle sleeve 30, and the other end passing through the outer barrel axle sleeve 30 to be connected to the inner barrel shaft 31. The first annular sink 29 is disposed at the junction of the inner barrel shaft 31 and the first rotation connector 28, the first annular sink 29 and a position at the outer surface of the inner barrel shaft 31 is communicated through a pipe disposed inside the inner barrel shaft 31. The inner barrel shaft 31 drives the inner barrel 1 to rotate, the inner barrel 1 is fixedly connected to the gimbal; therefore, the position at the outer surface of the inner barrel shaft 31 and the water inlet 23 of the gimbal are relative static. The position at the outer surface of the inner barrel shaft 31 is connected to the water inlet 23 of the gimbal through the intake pipe 22, water entering from the first rotation connector 28 is stored in the first annular sink 29 temporarily, and the water temporarily stored in the first annular sink 29 may enter the gimbal.

As shown in FIG. 8, the structure of the drainage pipeline is the same as the structure of the intake pipeline, the second rotation connector 26 is a pipe connector that is disposed on the outer barrel axle sleeve 30 and has one end exposed out of the outer barrel axle sleeve 30 and the other end passing through the outer barrel axle sleeve 30 to be connected to the inner barrel shaft 31. The second annular sink 27 is disposed at the junction of the inner barrel shaft 31 and the second rotation connector 26, the second annular sink 27 and a position at the outer surface of the inner barrel shaft 31 is communicated through a pipe disposed inside the inner barrel shaft 31. The inner barrel shaft 31 drives the inner barrel 1 to rotate, the inner barrel 1 is fixedly connected to the gimbal; therefore, the position at the outer surface of the inner barrel shaft 31 and the drainage port 8 of the gimbal are relative static. The position at the outer surface of the inner barrel shaft 31 is connected to the drainage port 8 of the gimbal through the drainage pipe 20, water discharged from the drainage port 8 is temporarily stored in the second annular sink 27 through the drainage pipe 20 and a pipe disposed in the inner barrel shaft 31, and the water temporarily stored in the second annular sink 27 may be discharged through the second rotation connector 26 and then through the controllable stop valve 21.

The inner circumference of the gimbal is provided with at least one vent hole 25. The air pressure is adjusted to facilitate the intake pump 23 to pump the water into the gimbal.

Without intent to limit the scope of the invention, examples and their related results according to the embodiments of the present invention are given below.

Embodiment 1

As shown in FIGS. 1 and 2, a washing machine having a water injection hole-type gimbal described in this embodiment is a roller washing machine, the water injection hole-type gimbal is embedded into a cloth feed port of an inner barrel 1 and is connected to the inner barrel 1, the diameter of the inner circumference of the water injection hole-type gimbal is greater than the diameter of a water injection hole of the inner barrel 1, so as to ensure that washing water can enter into the gimbal.

In this embodiment, no water injection component 5 and drainage pump 4 are provided, the washing water enters the gimbal portion, where a part of the washing water is located in the gimbal, and a part of the washing water is brought away when the gimbal rotates. When the rotation speed is large, the washing water brought away by the gimbal will attach the outer circumference in the gimbal and rotate together with the gimbal, thereby balancing the load eccentricity (referring to FIG. 5).

For the washing machine of this embodiment, the washing water is discharged from the washing machine after the dehydration distribution, and the load eccentricity of the inner barrel 1 during the dehydration is balanced with the washing water entering the gimbal through the gimbal water injection hole 2, and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port 8.

Embodiment 2

As shown in FIGS. 3 and 4, a washing machine having a water injection hole-type gimbal described in this embodiment is a roller washing machine, the gimbal is disposed at a cloth feed port of an inner barrel 1 of the washing machine, the gimbal is of an annular structure, a round of water injection holes 2 are disposed in the gimbal along the inner circumference thereof, for washing water to enter the gimbal to balance the internal load eccentricity of the inner barrel 1. The water injection hole is a round of water injection holes distributed on the inner circumference of the annular gimbal, and the water injection component 5 is fixed and can be disposed at the bottom of the washing machine. When the inner barrel 1 rotates, the water injection component 5 and the gimbal rotate relatively; however, the water injection component 5 always can be inserted into the gimbal. During washing and rising processes of the washing machine, there is no water in the gimbal, and during the dehydration distribution, the washing water enters the gimbal through the water injection hole 2, so as to balance the load eccentricity (referring to FIG. 5).

A water injection component 5 is disposed on a drainage chamber 4, the water injection component 5 is inserted into the gimbal through the water injection hole 2 of the gimbal, to communicate the drainage chamber 3 and the gimbal, and the water injection component 5 is provided with a drainage pump 4. A part of the washing water in the inner barrel 1 is reserved in the drainage chamber 3 during drainage, and during dehydration distribution, the washing machine pumps a corresponding quantity of washing water into the gimbal according to the load eccentricity, so as to balance the load eccentricity. The junction of the drainage chamber 3 and the water injection component assumes an inclined surface, a filter screen 6 is disposed at the junction, and the bottom of the drainage chamber 3 is further provided with a water outlet 7 in communication with a drainage pipeline of the washing machine. The water outlet 7 at the bottom of the drainage chamber 3 may discharge the residual washing water when the washing water is no longer required inside the gimbal after the dehydration distribution is completed.

At least one drainage port 8 configured to discharge the balance liquid is disposed outside the gimbal along a radial direction of the outer diameter of the ring, the drainage port is provided with a drainage valve 9, and the drainage valve 9 is an automatic opening and closing structure. The drainage valve 9 is closed under the action of the centrifugal force when the inner barrel 1 of the washing machine rotates at a high speed, and after the dehydration ends, the rotation speed of the inner barrel 1 gradually reduces, the centrifugal force gradually reduces, and the drainage valve 9 is opened to discharge the washing water in the gimbal.

Before the dehydration distribution, the washing water is discharged, a part of the washing water is reserved in the drainage chamber; during the dehydration distribution, the washing machine calculates the load eccentricity of the inner barrel 1, and the drainage pump 4 injects the washing water corresponding to the load eccentricity into the gimbal through the gimbal water injection hole 2, so as to balance the internal load eccentricity of the inner barrel 1 during the dehydration; and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port 8.

The water injection hole-type gimbal described in this embodiment may also be applied to a pulsator washing machine. If it is applied to the pulsator washing machine, the water injection hole-type gimbal is disposed at the top of an inner barrel, a drainage chamber is disposed at the bottom of the washing machine and is in communication with the internal of the gimbal through a water injection component and a drainage pump, and a drainage valve is disposed at a gimbal drainage port.

Embodiment 3

As shown in FIG. 2, a drainage valve of this embodiment includes a spring 10, and a baffle 11 and a second baffle 12 that are disposed at two ends of the spring. A connection member 15 is disposed between the baffle 11 and the second baffle 12, the spring 10 sleeves the connection member 15, and the spring 10 and the connection member 15 are located in the drainage port 8. One end of the spring 10 is connected to an outer end of the drainage port 8, and the other end is connected to the baffle 11. The baffle 11 is located in the gimbal, the second baffle 15 is located out of the gimbal, a gap is formed between the baffle 11 and an inner wall of the gimbal, a bump 14 configured to position and fix the spring 10 is disposed at an outer portion of the drainage port 8 of the gimbal, and the spring 10 is connected to the bump 14.

The shape of the baffle 11 matches with the shape of the drainage port 8, the area of the baffle 11 is greater than the area of the drainage port, the length of the spring 10 in a free state is greater than the thickness of the gimbal, and the length of the spring in an extreme compression state is less than the thickness of the gimbal. When the inner barrel 1 does not rotate, the spring 10 is in a naturally stretched state, and there is a gap between the baffle 11 and the inner wall of the gimbal, that is, the drainage valve 9 is in an open state. When the washing inner barrel 1 rotates, because of the centrifugal force, the baffle 11 compresses the spring 10 until the baffle 11 is attached to the inner wall of the gimbal, and the drainage valve 9 is in a closed state.

Preferably, there are 3 drainage ports 8 uniformly distribution on the outer circumference of the gimbal.

Embodiment 4

As shown in FIG. 4, a drainage valve of this embodiment is an automatic opening and closing structure, the drainage port 8 is a drainage port having a V-shaped section, and a movable ball valve spool 18 is disposed inside the V-shaped drainage port, the density of the ball valve spool 18 is less than the density of the water and can float in the water. During the dehydration, the inner barrel 1 rotates at a high speed, the centrifugal force generated by the rotation is greater than the buoyancy force of the ball valve spool 18, the ball valve spool 18 closely attaches the inner wall of the V-shaped drainage port to enclose the drainage port; after the dehydration ends, the inner barrel 1 gradually stops rotation, the centrifugal force gradually reduces when the rotation speed reduces, and when the centrifugal force is less than the buoyancy force of the ball valve spool 18, the ball valve spool 18 is in a free active state, and the balance liquid in the gimbal is discharged through the drainage port 8.

Preferably, there are 4 drainage ports 8 uniformly distributed on the outer circumference of the gimbal.

The water intake manner of the water injection hole and the drainage manner of the drainage port may be combined randomly.

Embodiment 5

In a washing machine having a water injection hole-type gimbal described in this embodiment (not shown), the water injection hole 2 of the gimbal is a round of annular water injection holes disposed on the inner circumference of the gimbal, a water injection component is disposed corresponding to the water injection hole, the water injection component is a pipe fixedly connected to the outer barrel 13 and/or a shell of the washing machine, one end of the pipe is inserted into the water injection hole of the gimbal and is not in contact with the gimbal to avoid noise generated by relative movement during contact, and the other end of the pipe is in communication with the running water. The running water may be used to balance the load eccentricity.

Before the dehydration distribution, the washing water is discharged; during the dehydration distribution, the washing machine calculates the load eccentricity in the inner barrel 1, and injects running water corresponding to the eccentricity into the gimbal through the gimbal water injection hole 2, so as to balance the eccentricity of the internal load during dehydration of the inner barrel 1, and after the dehydration ends, the running water in the gimbal is discharged through the drainage port 8.

In Embodiment 2 and Embodiment 4, water may be injected into the gimbal according to the eccentricity to balance the eccentricity, and in Embodiment 1, water of corresponding quantity cannot be entered according to the eccentricity, and only a part of water can enter to balance the eccentricity.

Embodiment 6

As shown in FIG. 6, a washing machine having a water injection hole-type gimbal is provided. During dehydration distribution, the washing machine calculates the load eccentricity in an inner barrel 1, a drainage pump 4 pumps washing water into the gimbal until the pumped washing water and load reach preset balance.

During dehydration, the inner barrel rotates at a high speed, the centrifugal force generated by rotation enables a baffle 11 to compress the spring 10, the baffle 11 closely attached to the inner wall of the gimbal to enclose the drainage port 8, and the washing water in the gimbal and the load are balance eccentrically until the dehydration ends.

When the dehydration ends, the inner barrel 1 gradually stops rotation, the centrifugal force is smaller along with the reduction of the speed, and when the centrifugal force is less than the restoring force of the spring 10, the restoring force of the spring 10 resets the baffle 11, and the washing water in the gimbal is discharged through the drainage port 8.

Embodiment 7

A control method of a washing machine having an active water injection gimbal is provided, where water is injected through a water intake structure, so as to balance the load eccentricity of an inner barrel 1 during dehydration, and the water in the gimbal is discharged through a drainage structure to reduce the mass of the gimbal.

An active water injection gimbal is disposed at an opening of the inner barrel 1 of the washing machine, the gimbal is connected to the inner barrel 1, a water intake end of the washing machine is in communication with the gimbal through an intake pump 23 and an intake waterway, and the gimbal is in communication with a drainage end of the washing machine through a drainage waterway and a controllable stop valve 21. During dehydration distribution, a control board of the washing machine calculates or measures the load eccentricity inside the inner barrel, and controls the intake pump to pump water corresponding to the load eccentricity into the gimbal, so as to balance the eccentricity of the load inside the inner barrel, and after the dehydration ends, the control board of the washing machine controls the controllable stop valve 21 to be open, and the water inside the gimbal is discharged through the drainage end of the washing machine under the action of the centrifugal force.

The control board of the washing machine controls the rotation speed of the inner barrel to rise to a high rotation speed, and controls water injection into the washing machine gimbal to balance the load eccentricity, and the high rotation speed is a rotation speed higher than 75 rpm.

As shown in FIG. 11, during the dehydration distribution, the control board of the washing machine calculates or measures the internal load eccentricity of the inner barrel, controls the intake pump to pump water into the gimbal until preset balance is reached, so as to enter the dehydration stage till the dehydration ends, the control board controls the controllable stop valve to open to discharge the water in the gimbal.

The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.

The embodiments were chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein. 

What is claimed is:
 1. A washing machine, the washing machine comprising: an outer barrel (13); and an inner barrel (1), a cloth feed port of the inner barrel (1) being provided with a gimbal, wherein the gimbal is of an annular structure, an inner circumference of the gimbal is provided with a water injection hole (2) configured to supply water into the gimbal to serve as a balance liquid to balance the load eccentricity, and an outer circumference of the gimbal is provided with at least one drainage port (8) that is openable and closeable.
 2. The washing machine according to claim 1, wherein the water injection hole (2) is configured as a round of annular water injection hole disposed on the inner circumference of the gimbal, a water injection component (5) is disposed corresponding to the water injection hole, the water injection component (5) is a pipe fixed to the outer barrel (13) or a shell of the washing machine, one end of the pipe is inserted into the water injection hole (5) of the gimbal and is not in contact with a wall of the gimbal, and the other end of the pipe is in communication with a running water and/or washing water pipeline.
 3. The washing machine according to claim 2, wherein the water injection component (5) is a pipe fixedly connected to the outer barrel (13), the bottom of the outer barrel (13) is provided with a drainage chamber (3) capable of reserving a part of washing water, one end of the pipe is inserted into the water injection hole (2) of the gimbal and is not in contact with the wall of the gimbal, and the other end is in communication with the drainage chamber (3) through a drainage pump (4) capable of pumping water flows.
 4. The washing machine according to claim 3, wherein a filter screen (6) is disposed at a junction of the drainage chamber (3) and the water injection component (5), and the bottom of the drainage chamber (3) is provided with a water outlet (7) in communication with a drainage pipeline of the washing machine.
 5. The washing machine according to claim 1, wherein the outer circumference of the gimbal is provided with 2 to 10 drainage ports (8) configured to discharge the balance liquid, and the drainage port is provided with a drainage valve (9) capable of controlling opening or closing of the drainage port (8).
 6. The washing machine according to claim 5, wherein the drainage valve is an automatic opening and closing structure, the drainage valve (9) comprises a spring (10) and a baffle (11), the spring (10) is located in the drainage port (8), one end of the spring (10) is connected to an outer end of the drainage port (8), the other end of the spring (10) is connected to the baffle (11), the baffle (11) is located inside the gimbal, the shape of the baffle (11) matches with the shape of the drainage port (8), and when the spring is in a free state, the drainage port (8) keeps open.
 7. The washing machine according to claim 5, wherein the drainage valve is an automatic opening and closing structure, the section of the drainage port (8) is V-shaped, and a movable ball valve spool (18) is disposed inside the V-shaped drainage port.
 8. A control method of the washing machine according to claim 1, comprising: injecting water into the gimbal through the gimbal water injection hole (2), so as to balance the load eccentricity of the inner barrel (1) during dehydration.
 9. The control method according to claim 8, wherein after dehydration distribution, washing water is discharged from the washing machine, the washing water entering the gimbal through the gimbal water injection hole (2) balances the load eccentricity of the inner barrel during dehydration, and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port (8).
 10. The control method according to claim 8, wherein before the dehydration distribution, the washing water is discharged, and during the dehydration distribution, according to the load eccentricity of the inner barrel (1), running water suitable to the eccentricity is injected into the gimbal through the gimbal water injection hole (2), so as to balance the eccentricity of the load inside the inner barrel (2) during the dehydration, and after the dehydration ends, the running water inside the gimbal is discharged through the drainage port.
 11. The control method according to claim 8, wherein before the dehydration distribution, the washing water is discharged, and a part of washing water is reserved in the drainage chamber; during the dehydration distribution, according to the load eccentricity of the inner barrel (1), the drainage pump (4) injects washing water suitable to the load eccentricity into the gimbal through the gimbal water injection hole (2), so as to balance the eccentricity of the internal load of the inner barrel (1) during the dehydration, and after the dehydration ends, the washing water in the gimbal is discharged through the drainage port (8).
 12. The control method according to claim 9, wherein during dehydration, the inner barrel (1) rotates at a high speed, the centrifugal force generated by the rotation is greater than the resistance of the spring (10), so that the baffle (11) compresses the spring (10), the baffle (11) closely attaches an inner wall of the gimbal to enclose the drainage port (8), when the dehydration ends, the inner barrel (1) gradually stops rotation, the centrifugal force gradually reduces along with the reduction of the speed, when the centrifugal force is less than the restoring force of the spring (10), the restoring force of the spring (10) resets the baffle (11), and the balance liquid inside the gimbal is discharged through the drainage port (8); or, during dehydration, the centrifugal force generated by high-speed rotation of the inner barrel (1) is greater than the buoyancy force of the ball valve spool (18), the ball valve spool (18) closely attaches the inner wall of the V-shaped drainage port to enclose the drainage port, when the dehydration ends, the inner barrel (1) gradually stops rotation, and the centrifugal force gradually reduces along with the reduction of the speed, when the centrifugal force is less than the buoyancy force of the ball valve spool (18), the ball valve spool (18) is in a free active state, and the balance liquid inside the gimbal is discharged through the drainage port (8).
 13. A washing machine, the washing machine comprising: an outer barrel (13), and an inner barrel (1), a gimbal being disposed at an opening of the inner barrel (1), wherein the gimbal is of an annular structure, the inside of the gimbal is a hollow chamber, and the washing machine is further provided with a water intake structure configured to inject water into the hollow chamber to balance the load eccentricity and a drainage structure configured to discharge the water in the gimbal.
 14. The washing machine according to claim 13, wherein the water intake structure extends from the gimbal at the front end opening of the inner barrel (1) to an inner barrel shaft at the rear end of the inner barrel (1) along an outer surface of a sidewall of the inner barrel (1), and is in communication with a water intake end of the washing machine through the internal of the inner barrel shaft; the drainage structure extends from the gimbal at the front end opening of the inner barrel (1) to an inner barrel shaft at the rear end of the inner barrel (1) along an outer surface of a sidewall of the inner barrel (1), and is in communication with a drainage end of the washing machine through the internal of the inner barrel shaft.
 15. The washing machine according to claim 14, wherein water intake structure comprises an intake pump (23) that is located at the rear portion of the washing machine and configured to transmit water flows and an intake waterway that is in communication with the intake pump (23) and the gimbal and configured to inject water into the gimbal, the drainage structure comprises a controllable stop valve (21) that is located at the rear portion of the washing machine and configured to control opening and closing of the drainage structure and a drainage waterway that is in communication with the controllable stop valve (21) and the gimbal and configured to discharge the water in the gimbal.
 16. The washing machine according to claim 15, wherein the outer circumference of the gimbal is provided with a drainage port (8), one end of the drainage waterway is connected to the drainage port (8) and the other end is connected to the controllable stop valve (21), an end face of the gimbal close to the inner circumference of the gimbal is provided with a water inlet (24), one end of the intake waterway is connected to the water inlet (24) and the other end is connected to the intake pump (23).
 17. The washing machine according to claim 16, wherein the intake waterway comprises an intake pipe (22) that is located at an outer surface of the sidewall of the inner barrel (1) and rotates together with the inner barrel (1), a first rotation connector (28) that is located in an outer barrel axle sleeve (30) and is fixed, wherein a first annular sink (29) is disposed at a junction of an inner barrel shaft (31) and the first rotation connector (28), the first annular sink (29) is in communication with the intake pipe (22), and the other end of the first rotation connector (28) is in communication with a water intake end of the washing machine through the intake pump (23).
 18. The washing machine according to claim 16, wherein the drainage waterway comprises a drainage pipe (20) that is located at the outer surface of the sidewall of the inner barrel (1) and rotates together with the inner barrel (1), and a second rotation connector (26) that is located in an outer barrel axle sleeve (30) and is fixed, wherein a second annular sink (27) is disposed at a junction of an inner barrel shaft (31) and the second rotation connector (26), the second annular sink (27) is in communication with the drainage pipe (20), and the other end of the second rotation connector (26) is in communication with a water drainage end of the washing machine through the controllable stop valve (21).
 19. The washing machine according to claim 16, wherein the inner circumference of the gimbal is provided with at least one vent hole (25).
 20. A control method of the washing machine according to claim 13, comprising: injecting water into the gimbal through the water intake structure, so as to balance the load eccentricity of the inner barrel (1) during dehydration; and discharging the water in the gimbal through the drainage structure to reduce the mass of the gimbal.
 21. The control method according to claim 20, wherein during dehydration distribution, a control board of the washing machine calculates or measures the internal load eccentricity of the inner barrel, and controls the intake pump to pump water corresponding to the load eccentricity into the gimbal, so as to balance the eccentricity of the internal load of the inner barrel, and after the dehydration ends, the control board of the washing machine controls the controllable stop valve (21) to be open, and the water inside the gimbal is discharged through the drainage end of the washing machine under the action of the centrifugal force.
 22. The control method according to claim 21, wherein the control board of the washing machine controls the rotation speed of the inner barrel to rise to a high rotation speed, and controls water injection into the washing machine gimbal to balance the load eccentricity, and the high rotation speed is a rotation speed higher than 75 rpm. 